Affiliate Marketing Secrets

I want to upgrade my brother’s pc and he has the Kingston / KVR667D2N5/1G in his pc. Same as the one on this link.
http://www.misco.co.uk/product/Q65362?affiliate=ram&gclid=CMffj8Ka2LMCFe7MtAodZggAKA
My question is, if I want to upgrade the ram, can I use the 2gb like this link http://www.misco.co.uk/Product/Q128088/Kingston-ValueRam-2GB-PC6400-DDR2-RAM or http://www.misco.co.uk/Product/Q74932/Kingston-ValueRam-2GB-PC5300-DDR2-RAM
The 2gb ones on the link, are there difference with them both? or not?
What would you suggest?

So, in 2010? I think it was 2010 (it was either my junior or sophomore year of highschool) my mother’s dumb a$$ husband was arrested at my house. Seriously, the whole SWAT team came. Early in the morning about to leave to go to band practice and police officers banging on the door. They were pretty much doing an all around sweep in San Antonio of all the ex members of some stupid a$$ gang named “La Emma” f*cking retards, and my moms husband used to be in it or whatever. Anyways, they (the cops) made me get on the floor, handcuffed me, my mom, and her sorry stupid husband, and they asked if I had anything bad in my room, I said no, because I didn’t have anything at all. No drugs, no gang affiliated stuff, so they told me that they would not raid my room. Mind that I was crying the whole time because I was so freaked out, and those jerk cops RAIDED MY ROOM.
Bottom line, they took belongings of mine even though I had nothing to do with it and I haven’t gotten any of it back. They took about two photo/digital sd cards that had loads of my treasured pictures of my life and the people in it probably both 1G, and about two or three jump/pin drives, maybe 1G each, filled with pictures, music, school assignments.. And… I would just really like my stuff back. Even if I have to pay ridiculous amounts of money for it, I just want my memories back.
Can anyone PLEASE tell me what I might be able to do to get it all back, and is that even possible? ? Thankyou.